Description
Issue 5 - June 2005 Page 17 of 64 Pages
Under-range: Reading below measuring range.
Over-range: reading above measuring range. The
over-range indication is latching and can only be
cleared when the reading is again within the
measuring range. Press Reset to clear the over-range
indication.
There are two versions of the display board:
• V1 displays gas level, under-range and over-range, and calculates a TWA gas level
over eight hours; this board contains firmware release 1.00 or 1.01.
• V2 displays gas level, under-range and over-range and calculates the TWA gas
level over an user-adjustable period, and logs the gas level to memory. this board
contains firmware release 2.00 or 2.01.
The firmware version is shown on the display for a few seconds after the unit is turned
on, and is also marked on the display board.
A buzzer on the display board provides a local audible alarm.
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